考力代单双羔母羊主要经济性状的差异性及相关性分析  

ANALYSES OF THE DISCREPANCIES AND CORREI ATIONS OF MAIN ECONOMIC TRAITS OF MONOTOCUOUS AND BIPAROUS CORRIEDALE EWES

作　　者：王治华[1] 张松杰[1] 陈干 

机构地区：[1]安徽农业技术师范学院 [2]安徽省滁县地区大柳种羊场

出　　处：《安徽科技学院学报》1989年第1期51-55,共5页Journal of Anhui Science and Technology University

摘　　要：本文根据大柳种羊场1988年126头母羊的周岁鉴定资料,分析了单双羔母羊之间的差异性。结果表明,二者在初生重(x_1)、断奶重(x_3)、周岁体重(y_1)、周岁毛长(y_2)和周岁剪毛量(y_3)5个性状之间存在着显著差异;而断奶日令(x_2)的差异不显著。进而分析了上述性状之间的相关性,结果显示断奶重与周岁体重以及周岁剪毛量之间有显著相关,为生产实践中以断奶重作为早期选择的主要指标提供了理论基础。作者建议:充分重视羔羊哺乳期的饲养管理以增加断奶重,对提高群体的经济效益具有重要意义;在育成期采用单双羔分群培育的方法,将有利于尽早消除二者之间的差异性。On the basis of one-year-old determinations of 126 ewes ( 1988 ) on Daliu Sheep-breeding Farm, this paper analyses the discrepancies between single birth and double birth. The result shows that they differ significantly among the five traits of newborn weight ( xl) , weaning weight ( x2 ) , one-year-old weight ( yl ) one-year-old woollength ( y2.) and , wool yield( y3) but the weaning dates do not differ greatly. The further analyses of inter-relations between the above traits make it clear that weaning weight, one-year-old weight and on-year-old wool yield are apparently interrelated, which does provide theoretical basis ,for the early selection, with weaning weight as the principal target, in productive practice, The authors believe that to take great care of the lambs during the breast-feeding period to increase weaning weight is quite important to raise the econmic benefit of sheep population, and that to rear monotocpus and biparpous lambs separately during maturity may help eliminate discrepancies as early as Possible,

关 键 词：考力代X 经济性状 相关性 差异性 

分 类 号：G658.3[文化科学—教育学]